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- one which will not slip outavhen in use, and-c NATHANIEL F.' STONE, O F CHICAGO,A ILLINOIS.

Letters Patent No. 76,669, dated April 14, 1868; tmtetlated April 1, 1868.

IMPROVEMENT IN CAN-OPENER.

dlp .Stintino rifare tri in tigre tattrs gnant mit nailing artt et tigt smut.

TO ALL WIIOM IT MAY CGNCERN:

Be it known that I, NATHANIEL F. STONE, of the city of Chicago, in the county of Cook, and State of Illinois, have invented certain new and useful Improvements in Tools for Opening Cans; .and I do hereby declare that the following is a full, clear, and enact description thereof, reference being had to the aeeoinpanying drawings, making a part of'this specication, in which- Figure 1 represents a side View,

Figure 2 a top view, n v

Figure 3 a. top view oi" the cutter-plate detached, and

Figure 4 a reverse view.

Like letters refer to 'the saine parts in all of the 'figures The ,nature ot'l my invention consists in constructing a tool or knife for opening cans such as are used for enerve the can. for future use, by nia-king the tool so as to out out a circular oysters, sardines, kc.; so aste pr to its preservation, which is accomplished by making the bar of piece of a sine suited to the size of the can, or a single piece, and slotting it, and providing;` the slot with anadjustable blade -or cutter.

To enable others skilled lin thc art to make and use niy invention, I will describe its construction and operation.

The bar E made of steel or' other suitable metal, and from the handle A to the-point D it is from three. and one half to four inches in length. rEhe outerfend D is made round, and turned down so as to form a shoulder, when it isA again bent forward on a line or near 'ai line with the plate, and brought to a sharp point, which, when inserted through the tin, forms a hook, wliichprevents the implement from lifting or raising out when in operation. Itshould bo so turned at tiro shoulder that when Iin operation it will, at the point of intersection, be vertical, or nearly so. The bar is also provided with aslot, C, Vfor the insertion of a movable knife or cutter, which slotis about tuo inches in length and one-fourth of one inch in Width.

The cutter is usually made entirely oi' stoel, which I make by taking a suitable plate, the point d for the knife, as shou'n, and at the other end turning up a. picce,ia, the same in width as the width of the slot C, which projects upwards sullicicntly 'far to prevent the knife from turning when the cutter is attached to the plate Il by a single screw, `e. It is immaterial whether the heel or piece a projects entirely through the slot ornot. 'll'io knife tl is about one-halt` of one inch in length at its longest point, and is made with a receding cutting-edge,which or other thin metals in forino'f cans, or when hollow and cut fro forty-live degrees, is the best angle for the cutter-blade or knife. screw, c, and fastenedA by the tl1iunb-nut c ouY the opposite'side. K v v It will be seen froinits'censtruction that it een be 'adapted to any size-ef cans readily, and will cui'I out in a circular formthe original cap in oyster-cans, so that they een bc refilled orl used for other purposes; also,

Y l ne which is readily adjusted, and not liable to get out of order I), and turning down m the outside. The angle shown, being .about lThis cutter is attached to the plate by a single in use. y

Having thus fully described my invention, I am aware that a slotted bar, with bent point and a knife, has

been heretofore-patented to S. D. Leconipte, and I do not claim them as my invention; but' What I cla-im as new, and' desire to secure by' Letters Fatent, is- The plate-l, provided at one end with a cutter-blade, d, and atthe opposite end with a projection or heel,

e and. the plato or slotted bar il, substantially as specified.

' N. F. STONE.

a, in combination with the screw c Witnesses: Y

L. L. BOND, E. A. WEST.

iorin er cutter I have, by experiments, foundto be the best 4in cutting tin l 

